accessibility menu, dialog, popup

Test

Organic chloride salts

Organic chloride salts

Organic compound that contains one or more chloride ions bonded by ionic bonds. Salts are products of acid-base reactions.
Molecular Weight (g/mol) 
  • (2)
  • (6)
  • (2)
  • (3)
  • (2)
  • (2)
  • (1)
  • (3)
  • (3)
  • (2)
  • (2)
  • (3)
  • (1)
  • (2)
  • (2)
  • (3)
  • (2)
  • (3)
  • (2)
  • (2)
  • (2)
  • (1)
  • (4)
  • (3)
  • (1)
  • (1)
  • (3)
  • (3)
  • (9)
  • (3)
  • (3)
  • (2)
  • (2)
Quantity 
  • (1)
  • (18)
  • (1)
  • (7)
  • (3)
  • (6)
  • (2)
  • (1)
  • (9)
  • (4)
  • (7)
  • (15)
  • (6)
  • (2)
  • (1)
  • (2)
Percent Purity 
  • (1)
  • (5)
  • (1)
  • (5)
  • (1)
  • (2)
  • (6)
  • (22)
  • (21)
  • (5)
  • (2)
Physical Form 
  • (12)
  • (3)
  • (2)
  • (2)
  • (2)
  • (4)
Boiling Point 
  • (2)

Filtered Search Results

Products from some of our suppliers do not display in filtered search results. Please clear all filters to see these products.

Narrow Results

Narrow Results

No results found within this category. Try removing some selected filters and try again.

category

brands

  • (5)
  • (3)
  • (1)
  • (19)
  • (48)
  • (4)
  • (5)

special offers

  • (6)
  • (6)

Molecular Weight (g/mol)

  • (2)
  • (6)
  • (2)
  • (3)
  • (2)
  • (2)
  • (1)
  • (3)
  • (3)
  • (2)
  • (2)
  • (3)
  • (1)
  • (2)
  • (2)
  • (3)
  • (2)
  • (3)
  • (2)
  • (2)
  • (2)
  • (1)
  • (4)
  • (3)
  • (1)
  • (1)
  • (3)
  • (3)
  • (9)
  • (3)
  • (3)
  • (2)
  • (2)

Quantity

  • (1)
  • (18)
  • (1)
  • (7)
  • (3)
  • (6)
  • (2)
  • (1)
  • (9)
  • (4)
  • (7)
  • (15)
  • (6)
  • (2)
  • (1)
  • (2)

Percent Purity

  • (1)
  • (5)
  • (1)
  • (5)
  • (1)
  • (2)
  • (6)
  • (22)
  • (21)
  • (5)
  • (2)

Physical Form

  • (12)
  • (3)
  • (2)
  • (2)
  • (2)
  • (4)

Boiling Point

  • (2)

Grade

  • (2)
1 – 15 of 42 results
1

2,3,5-Triphenyl-2H-tetrazolium chloride, 98%, Thermo Scientific Chemicals

CAS: 298-96-4 Molecular Formula: C19H15ClN4 Molecular Weight (g/mol): 334.81 MDL Number: MFCD00011963 InChI Key: PKDBCJSWQUOKDO-UHFFFAOYSA-M Synonym: 2,3,5-triphenyltetrazolium chloride,tetrazolium red,uroscreen,red tetrazolium,urocheck,vitastain,tetrazolium chloride,triphenyltetrazolium chloride,2,3,5-triphenyl-2h-tetrazolium chloride,tetrazolium chloride PubChem CID: 9283 ChEBI: CHEBI:78019 IUPAC Name: 2,3,5-triphenyltetrazol-2-ium;chloride SMILES: [Cl-].C1=CC=C(C=C1)N1N=C(N=[N+]1C1=CC=CC=C1)C1=CC=CC=C1

Promotions are available
PubChem CID 9283
CAS 298-96-4
Molecular Weight (g/mol) 334.81
ChEBI CHEBI:78019
MDL Number MFCD00011963
SMILES [Cl-].C1=CC=C(C=C1)N1N=C(N=[N+]1C1=CC=CC=C1)C1=CC=CC=C1
Synonym 2,3,5-triphenyltetrazolium chloride,tetrazolium red,uroscreen,red tetrazolium,urocheck,vitastain,tetrazolium chloride,triphenyltetrazolium chloride,2,3,5-triphenyl-2h-tetrazolium chloride,tetrazolium chloride
IUPAC Name 2,3,5-triphenyltetrazol-2-ium;chloride
InChI Key PKDBCJSWQUOKDO-UHFFFAOYSA-M
Molecular Formula C19H15ClN4
2

2,3,5-Triphenyltetrazolium, Technical, Fisher Chemical™

CAS: 298-96-4 Molecular Formula: C19H15ClN4 Molecular Weight (g/mol): 334.81 MDL Number: MFCD00011963 InChI Key: PKDBCJSWQUOKDO-UHFFFAOYSA-M Synonym: 2,3,5-triphenyltetrazolium chloride,tetrazolium red,uroscreen,red tetrazolium,urocheck,vitastain,tetrazolium chloride,triphenyltetrazolium chloride,2,3,5-triphenyl-2h-tetrazolium chloride,tetrazolium chloride PubChem CID: 9283 ChEBI: CHEBI:78019 IUPAC Name: 2,3,5-triphenyltetrazol-2-ium;chloride SMILES: [Cl-].C1=CC=C(C=C1)N1N=C(N=[N+]1C1=CC=CC=C1)C1=CC=CC=C1

Promotions are available
PubChem CID 9283
CAS 298-96-4
Molecular Weight (g/mol) 334.81
ChEBI CHEBI:78019
MDL Number MFCD00011963
SMILES [Cl-].C1=CC=C(C=C1)N1N=C(N=[N+]1C1=CC=CC=C1)C1=CC=CC=C1
Synonym 2,3,5-triphenyltetrazolium chloride,tetrazolium red,uroscreen,red tetrazolium,urocheck,vitastain,tetrazolium chloride,triphenyltetrazolium chloride,2,3,5-triphenyl-2h-tetrazolium chloride,tetrazolium chloride
IUPAC Name 2,3,5-triphenyltetrazol-2-ium;chloride
InChI Key PKDBCJSWQUOKDO-UHFFFAOYSA-M
Molecular Formula C19H15ClN4
3

2-Aminoisobutyric acid methyl ester hydrochloride, 99%, Thermo Scientific Chemicals

CAS: 15028-41-8 Molecular Formula: C5H12ClNO2 Molecular Weight (g/mol): 153.606 MDL Number: MFCD00214247 InChI Key: NVWZNEDLYYLQJC-UHFFFAOYSA-N Synonym: methyl 2-amino-2-methylpropanoate hydrochloride,methyl 2-aminoisobutyrate hydrochloride,h-aib-ome.hcl,alpha-aminoisobutyric acid methyl ester hydrochloride,2-aminoisobutyric acid methyl ester hydrochloride,methyl alpha-aminoisobutyrate hydrochloride,methyl 2-methylalaninate hydrochloride,alanine, 2-methyl-, methyl ester, hydrochloride,aib-ome hydrochloride,pubchem16472 PubChem CID: 13258034 IUPAC Name: methyl 2-amino-2-methylpropanoate;hydrochloride SMILES: CC(C)(C(=O)OC)N.Cl

PubChem CID 13258034
CAS 15028-41-8
Molecular Weight (g/mol) 153.606
MDL Number MFCD00214247
SMILES CC(C)(C(=O)OC)N.Cl
Synonym methyl 2-amino-2-methylpropanoate hydrochloride,methyl 2-aminoisobutyrate hydrochloride,h-aib-ome.hcl,alpha-aminoisobutyric acid methyl ester hydrochloride,2-aminoisobutyric acid methyl ester hydrochloride,methyl alpha-aminoisobutyrate hydrochloride,methyl 2-methylalaninate hydrochloride,alanine, 2-methyl-, methyl ester, hydrochloride,aib-ome hydrochloride,pubchem16472
IUPAC Name methyl 2-amino-2-methylpropanoate;hydrochloride
InChI Key NVWZNEDLYYLQJC-UHFFFAOYSA-N
Molecular Formula C5H12ClNO2
4

Aminoguanidine hydrochloride, 98%, Thermo Scientific Chemicals

CAS: 1937-19-5 Molecular Formula: CH6N4·HCl Molecular Weight (g/mol): 110.55 MDL Number: MFCD00039074 InChI Key: UBDZFAGVPPMTIT-UHFFFAOYSA-N Synonym: aminoguanidine hydrochloride,pimagedine hcl,guanylhydrazine hydrochloride,hydrazinecarboximidamide hydrochloride,aminoguanidinehydrochloride,aminoguanidine hcl,pimagedine hydrochloride,aminoguanidine monohydrochloride,hydrazinecarboximidamide, hydrochloride PubChem CID: 2734687 IUPAC Name: 2-aminoguanidine;hydrochloride SMILES: C(=NN)(N)N.Cl

Promotions are available
PubChem CID 2734687
CAS 1937-19-5
Molecular Weight (g/mol) 110.55
MDL Number MFCD00039074
SMILES C(=NN)(N)N.Cl
Synonym aminoguanidine hydrochloride,pimagedine hcl,guanylhydrazine hydrochloride,hydrazinecarboximidamide hydrochloride,aminoguanidinehydrochloride,aminoguanidine hcl,pimagedine hydrochloride,aminoguanidine monohydrochloride,hydrazinecarboximidamide, hydrochloride
IUPAC Name 2-aminoguanidine;hydrochloride
InChI Key UBDZFAGVPPMTIT-UHFFFAOYSA-N
Molecular Formula CH6N4·HCl
5

Thermo Scientific Chemicals Safranine O

CAS: 477-73-6 Molecular Formula: C20H19ClN4 Molecular Weight (g/mol): 350.85 MDL Number: MFCD00011759 InChI Key: QRYAEWIQIBAZOJ-UHFFFAOYSA-N Synonym: basic red 2,safranine o,gossypimine,safranin,safranine t,safranin o,safranin t,safranine,tolusafranine,hidaco safranine PubChem CID: 2723800 IUPAC Name: 3,7-dimethyl-10-phenylphenazin-10-ium-2,8-diamine;chloride SMILES: [Cl-].CC1=C(N)C=C2C(=C1)N=C1C(C)=C(N)C=CC1=[N+]2C1=CC=CC=C1

Promotions are available
PubChem CID 2723800
CAS 477-73-6
Molecular Weight (g/mol) 350.85
MDL Number MFCD00011759
SMILES [Cl-].CC1=C(N)C=C2C(=C1)N=C1C(C)=C(N)C=CC1=[N+]2C1=CC=CC=C1
Synonym basic red 2,safranine o,gossypimine,safranin,safranine t,safranin o,safranin t,safranine,tolusafranine,hidaco safranine
IUPAC Name 3,7-dimethyl-10-phenylphenazin-10-ium-2,8-diamine;chloride
InChI Key QRYAEWIQIBAZOJ-UHFFFAOYSA-N
Molecular Formula C20H19ClN4
7

Methyl α-aminoisobutyrate hydrochloride, 98%, Thermo Scientific™

CAS: 15028-41-8 MDL Number: MFCD00214247 InChI Key: NVWZNEDLYYLQJC-UHFFFAOYSA-N Synonym: methyl 2-amino-2-methylpropanoate hydrochloride,methyl 2-aminoisobutyrate hydrochloride,h-aib-ome.hcl,alpha-aminoisobutyric acid methyl ester hydrochloride,2-aminoisobutyric acid methyl ester hydrochloride,methyl alpha-aminoisobutyrate hydrochloride,methyl 2-methylalaninate hydrochloride,alanine, 2-methyl-, methyl ester, hydrochloride,aib-ome hydrochloride,pubchem16472 PubChem CID: 13258034 IUPAC Name: methyl 2-amino-2-methylpropanoate;hydrochloride SMILES: CC(C)(C(=O)OC)N.Cl

PubChem CID 13258034
CAS 15028-41-8
MDL Number MFCD00214247
SMILES CC(C)(C(=O)OC)N.Cl
Synonym methyl 2-amino-2-methylpropanoate hydrochloride,methyl 2-aminoisobutyrate hydrochloride,h-aib-ome.hcl,alpha-aminoisobutyric acid methyl ester hydrochloride,2-aminoisobutyric acid methyl ester hydrochloride,methyl alpha-aminoisobutyrate hydrochloride,methyl 2-methylalaninate hydrochloride,alanine, 2-methyl-, methyl ester, hydrochloride,aib-ome hydrochloride,pubchem16472
IUPAC Name methyl 2-amino-2-methylpropanoate;hydrochloride
InChI Key NVWZNEDLYYLQJC-UHFFFAOYSA-N
8

4-(Trifluoromethyl)piperidine hydrochloride, 97%, Thermo Scientific Chemicals

CAS: 155849-49-3 Molecular Formula: C6H11ClF3N Molecular Weight (g/mol): 189.606 MDL Number: MFCD04971993 InChI Key: KMUKXPQVPQUCDB-UHFFFAOYSA-N Synonym: 4-trifluoromethyl piperidine hydrochloride,4-trifluoromethyl piperidine hcl,4-trifluoromethyl piperidinehydrochloride,4-trifluoromethylpiperidine hydrochloride,4-trifluoromethyl-piperidine hydrochloride,piperidine, 4-trifluoromethyl-, hydrochloride,4-trifluoromethyl piperidine, chloride,pubchem10319,4-trifluoromethyl piperidine, hcl,4-trifluoromethylpiperidine-hcl salt PubChem CID: 16218160 IUPAC Name: 4-(trifluoromethyl)piperidine;hydrochloride SMILES: C1CNCCC1C(F)(F)F.Cl

PubChem CID 16218160
CAS 155849-49-3
Molecular Weight (g/mol) 189.606
MDL Number MFCD04971993
SMILES C1CNCCC1C(F)(F)F.Cl
Synonym 4-trifluoromethyl piperidine hydrochloride,4-trifluoromethyl piperidine hcl,4-trifluoromethyl piperidinehydrochloride,4-trifluoromethylpiperidine hydrochloride,4-trifluoromethyl-piperidine hydrochloride,piperidine, 4-trifluoromethyl-, hydrochloride,4-trifluoromethyl piperidine, chloride,pubchem10319,4-trifluoromethyl piperidine, hcl,4-trifluoromethylpiperidine-hcl salt
IUPAC Name 4-(trifluoromethyl)piperidine;hydrochloride
InChI Key KMUKXPQVPQUCDB-UHFFFAOYSA-N
Molecular Formula C6H11ClF3N
9

3,3-Difluoropyrrolidine hydrochloride, 98%, Thermo Scientific Chemicals

CAS: 163457-23-6 Molecular Formula: C4H8ClF2N Molecular Weight (g/mol): 143.562 MDL Number: MFCD03788948 InChI Key: YYVPZQADFREIFR-UHFFFAOYSA-N Synonym: 3,3-difluoropyrrolidine hydrochloride,3,3-difluoropyrrolidine hcl,3,3-difluoropyrrolidinehydrochloride,pyrrolidine, 3,3-difluoro-, hydrochloride,pyrrolidine, 3,3-difluoro-, hydrochloride 1:1,3,3-difluoro-pyrrolidine hcl,3,3-difluoropyrrolidine hcl salt,3,3-difluoropyrrolidine, chloride,3,3-difluoro-pyrrolidinehydrochloride,pubchem9358 PubChem CID: 24903482 IUPAC Name: 3,3-difluoropyrrolidine;hydrochloride SMILES: C1CNCC1(F)F.Cl

PubChem CID 24903482
CAS 163457-23-6
Molecular Weight (g/mol) 143.562
MDL Number MFCD03788948
SMILES C1CNCC1(F)F.Cl
Synonym 3,3-difluoropyrrolidine hydrochloride,3,3-difluoropyrrolidine hcl,3,3-difluoropyrrolidinehydrochloride,pyrrolidine, 3,3-difluoro-, hydrochloride,pyrrolidine, 3,3-difluoro-, hydrochloride 1:1,3,3-difluoro-pyrrolidine hcl,3,3-difluoropyrrolidine hcl salt,3,3-difluoropyrrolidine, chloride,3,3-difluoro-pyrrolidinehydrochloride,pubchem9358
IUPAC Name 3,3-difluoropyrrolidine;hydrochloride
InChI Key YYVPZQADFREIFR-UHFFFAOYSA-N
Molecular Formula C4H8ClF2N
10

N-Methyl-1-naphthalenemethylamine hydrochloride, 98%, Thermo Scientific Chemicals

CAS: 65473-13-4 Molecular Formula: C12H14ClN Molecular Weight (g/mol): 207.701 MDL Number: MFCD00012555 InChI Key: BVJVHPKFDIYQOU-UHFFFAOYSA-N Synonym: n-methyl-1-naphthalenemethylamine hydrochloride,n-methyl-1-naphthalen-1-yl methanamine hydrochloride,n-methyl-1-naphthylmethylamine hydrochloride,n-methyl-n-naphthylmethylamine hydrochloride,unii-z8vrt9b309,methyl naphthalen-1-ylmethyl amine hydrochloride,n-methyl-1-naphthalenemethanamine hydrochloride,n-methyl-c-naphthalen-1-yl methanamine hydrochloride,1-naphthalenemethanamine, n-methyl-, hydrochloride 1:1,1-methylaminomethyl naphthalene hydrochloride PubChem CID: 16211748 IUPAC Name: N-methyl-1-naphthalen-1-ylmethanamine;hydrochloride SMILES: CNCC1=CC=CC2=CC=CC=C21.Cl

PubChem CID 16211748
CAS 65473-13-4
Molecular Weight (g/mol) 207.701
MDL Number MFCD00012555
SMILES CNCC1=CC=CC2=CC=CC=C21.Cl
Synonym n-methyl-1-naphthalenemethylamine hydrochloride,n-methyl-1-naphthalen-1-yl methanamine hydrochloride,n-methyl-1-naphthylmethylamine hydrochloride,n-methyl-n-naphthylmethylamine hydrochloride,unii-z8vrt9b309,methyl naphthalen-1-ylmethyl amine hydrochloride,n-methyl-1-naphthalenemethanamine hydrochloride,n-methyl-c-naphthalen-1-yl methanamine hydrochloride,1-naphthalenemethanamine, n-methyl-, hydrochloride 1:1,1-methylaminomethyl naphthalene hydrochloride
IUPAC Name N-methyl-1-naphthalen-1-ylmethanamine;hydrochloride
InChI Key BVJVHPKFDIYQOU-UHFFFAOYSA-N
Molecular Formula C12H14ClN
11

2-Aminophenylboronic acid hydrochloride, 97%, Thermo Scientific Chemicals

CAS: 863753-30-4 Molecular Formula: C6H9BClNO2 Molecular Weight (g/mol): 173.40 MDL Number: MFCD02258096 InChI Key: WPDASZCYRKGSTO-UHFFFAOYSA-N Synonym: 2-aminophenylboronic acid hydrochloride,2-aminophenyl boronic acid hydrochloride,2-aminophenylboronic acid hcl,2-aminophenylboronic acid, hydrochloride,2-2-aminophenyl boronic acid hydrochloride,boronic acid, 2-aminophenyl-, hydrochloride,pubchem1746,ksc914i9f,2-aminophenylboronic acid,hcl,2-aminophenylboronic acid, hcl PubChem CID: 16427090 SMILES: Cl.NC1=CC=CC=C1B(O)O

PubChem CID 16427090
CAS 863753-30-4
Molecular Weight (g/mol) 173.40
MDL Number MFCD02258096
SMILES Cl.NC1=CC=CC=C1B(O)O
Synonym 2-aminophenylboronic acid hydrochloride,2-aminophenyl boronic acid hydrochloride,2-aminophenylboronic acid hcl,2-aminophenylboronic acid, hydrochloride,2-2-aminophenyl boronic acid hydrochloride,boronic acid, 2-aminophenyl-, hydrochloride,pubchem1746,ksc914i9f,2-aminophenylboronic acid,hcl,2-aminophenylboronic acid, hcl
InChI Key WPDASZCYRKGSTO-UHFFFAOYSA-N
Molecular Formula C6H9BClNO2
12

4-Chloroaniline hydrochloride, 97%, Thermo Scientific™

CAS: 20265-96-7 Molecular Formula: C6H7Cl2N Molecular Weight (g/mol): 164.029 MDL Number: MFCD00042057 InChI Key: ISJBQSJDQZLCSF-UHFFFAOYSA-N Synonym: 4-chloroaniline hydrochloride,p-chloroaniline hydrochloride,4-chlorobenzenamine hydrochloride,4-chloroanilinium chloride,benzenamine, 4-chloro-, hydrochloride,p-chloroanilinium chloride,unii-po3w01cfsw,p-chloroaniline hcl,4-chloroaniline hcl,p-chlorophenylamine hydrochloride PubChem CID: 5284363 IUPAC Name: 4-chloroaniline;hydrochloride SMILES: C1=CC(=CC=C1N)Cl.Cl

PubChem CID 5284363
CAS 20265-96-7
Molecular Weight (g/mol) 164.029
MDL Number MFCD00042057
SMILES C1=CC(=CC=C1N)Cl.Cl
Synonym 4-chloroaniline hydrochloride,p-chloroaniline hydrochloride,4-chlorobenzenamine hydrochloride,4-chloroanilinium chloride,benzenamine, 4-chloro-, hydrochloride,p-chloroanilinium chloride,unii-po3w01cfsw,p-chloroaniline hcl,4-chloroaniline hcl,p-chlorophenylamine hydrochloride
IUPAC Name 4-chloroaniline;hydrochloride
InChI Key ISJBQSJDQZLCSF-UHFFFAOYSA-N
Molecular Formula C6H7Cl2N
13

(Chloromethylene)dimethylammonium chloride, 96%, Thermo Scientific Chemicals

CAS: 3724-43-4 Molecular Formula: C3H7Cl2N Molecular Weight (g/mol): 128 MDL Number: MFCD00011868 InChI Key: QQVDYSUDFZZPSU-UHFFFAOYSA-M Synonym: arnold's reagent,vilsmeier reagent,chloromethylene dimethyliminium chloride,methanaminium, n-chloromethylene-n-methyl-, chloride,chloromethylene dimethylammonium chloride,n-chloromethylidene-n-methylmethanaminium chloride,chloromethylenedimethylammonium chloride,chloromethylidene dimethylazanium chloride,n-chloromethylene-n,n-dimethyl ammonium chloride PubChem CID: 77311 IUPAC Name: chloromethylidene(dimethyl)azanium;chloride SMILES: C[N+](=CCl)C.[Cl-]

PubChem CID 77311
CAS 3724-43-4
Molecular Weight (g/mol) 128
MDL Number MFCD00011868
SMILES C[N+](=CCl)C.[Cl-]
Synonym arnold's reagent,vilsmeier reagent,chloromethylene dimethyliminium chloride,methanaminium, n-chloromethylene-n-methyl-, chloride,chloromethylene dimethylammonium chloride,n-chloromethylidene-n-methylmethanaminium chloride,chloromethylenedimethylammonium chloride,chloromethylidene dimethylazanium chloride,n-chloromethylene-n,n-dimethyl ammonium chloride
IUPAC Name chloromethylidene(dimethyl)azanium;chloride
InChI Key QQVDYSUDFZZPSU-UHFFFAOYSA-M
Molecular Formula C3H7Cl2N
14

4-Nitrobenzylamine hydrochloride, 94%, Thermo Scientific Chemicals

CAS: 18600-42-5 Molecular Formula: C7H9ClN2O2 Molecular Weight (g/mol): 188.611 MDL Number: MFCD00012863 InChI Key: SMIXZZMSWYOQPW-UHFFFAOYSA-N Synonym: 4-nitrobenzylamine hydrochloride,4-nitrophenyl methanamine hydrochloride,p-nitrobenzylamine hydrochloride,4-nitrobenzylamine hcl,pubchem12455,acmc-209enh,4-nitrobenzylamine hcl salt,ksc493k2b,p-nitrobenzylaminehydrochloride,4-nitrobenzylaminehydrochloride PubChem CID: 11252467 IUPAC Name: (4-nitrophenyl)methanamine;hydrochloride SMILES: C1=CC(=CC=C1CN)[N+](=O)[O-].Cl

PubChem CID 11252467
CAS 18600-42-5
Molecular Weight (g/mol) 188.611
MDL Number MFCD00012863
SMILES C1=CC(=CC=C1CN)[N+](=O)[O-].Cl
Synonym 4-nitrobenzylamine hydrochloride,4-nitrophenyl methanamine hydrochloride,p-nitrobenzylamine hydrochloride,4-nitrobenzylamine hcl,pubchem12455,acmc-209enh,4-nitrobenzylamine hcl salt,ksc493k2b,p-nitrobenzylaminehydrochloride,4-nitrobenzylaminehydrochloride
IUPAC Name (4-nitrophenyl)methanamine;hydrochloride
InChI Key SMIXZZMSWYOQPW-UHFFFAOYSA-N
Molecular Formula C7H9ClN2O2